You can talk to any professional including teachers and school staff including school nurses, doctors and nurses, social workers or health visitors.
There is also lots of helpful information and links here, so please take a look and see what would be helpful for you.
Kooth.com
You can also find free, confidential online support by visiting Kooth which offers one-to-one text based counselling, therapeutic messaging, as well as peer-to-peer support through moderated forums and articles.